Ds\Map::first

(PECL ds >= 1.0.0)

Ds\Map::first — Returns the first pair in the map

public function Ds\Map::first(): Ds\Pair

Returns the first pair in the map.

This function has no parameters.

The first pair in the map.

Example #1 Ds\Map::first() example

<?php
$map = new \Ds\Map(["a" => 1, "b" => 2, "c" => 3]);
var_dump($map->first());
?>

The above example will output something similar to:

object(Ds\Pair)#2 (2) {
  ["key"]=>
  string(1) "a"
  ["value"]=>
  int(1)
}